Reamer.



A. PISGHBAOH.

REAMEB.

APILIOATION FILED APB. 21.1908.

Patented Mar 23, 1909.

WITNESSES A TTOHNEYS ran NORRI5 PETERS C0,, WASHINGTON, n. c.

PATENT ()FiliIliQE.

ALBERT FISOHBACH, OF TON OPAH, NEVADA.

REAMER.

Specification of Letters Patent.

Patented March as, 1909.

Application filed April 21, 1908. Serial No. 428,392.

To all whom it may concern:

Be it known that I, ALBERT Frsonnnon, a citizen of the United States,and a resident of Tonopah, in the county of Nye and State of Nevada,have invented a new and Improved Reamer, of which the following is afull, clear, and exact description.

This invention relates to reamers and more particularly to devices ofthis kind for ream ing out the wrist or knuckle pin holes of locomotivecross heads and side rods.

More specifically, the invention relates to a reamer having a cutter, amember controlling the cutter, and a second member adapted to engage afixed support such as a cross head or side rod, and controlling thefirst member and having a roller bearing engagement therewith, the firstmember having an adj ustable nut for forcing the second member againstthe support, so that as the reaming operation progresses the members canfrom tlme to time be adjusted.

An object of the invention is to provide a simple, strong and durablereamer which is inexpensive to manufacture, the cutter of which can bemounted upon an ordinary reamer spindle and employed in the usualmanner, and which can be used for reaming out the wrist pin holes oflocomotive cross heads or side rods, without taking down the cross headsor side rods.

A further object of the invention is to provide a device of the classdescribed having a tapered cutter, means for operating the cutter fromthe side remote from that from which the cutter is inserted, havingsimple means for adjusting the cutter as the reaming operationprogresses, able.

The invention consists in the construction and combination of parts tobe more fully described hereinafter and particularly set forth in theclaim.

Reference is to be had to the accompanying drawings forming a part ofthis specification, inwhich similar characters of reference indicatecorresponding parts and in which Figure 1 is a longitudinal section onthe line 11 of Fig. 2, showing the reamer in use; Fig. 2 is a transversesection on the line 2-2 of Fig. 1; Fig. 3 is an end view showing thecutter, and the s indle upon which the cutter is mounted; and Fig. 4 isan end elevation showing a nut which serves for the adjustment of thereamer when in operation.

and which is easily oper- Before proceeding to a more detailedexplanation of my invention, it should be clearly understood that whilethe reamer is particularly useful for reaming out the wrist pin holes oflocomotive cross heads, side rods and the like, it can also beadvantageousl r employed for other purposes to which ordinary reamersare adapted. The cutter, as is customary, is tapered and can be mountedupon an operating spindle so that it can be inserted in the hole and thespindle operated from the same side at which the cutter was inserted. Iprovide means however, for operating the cutter from the opposite sidefrom that at which it was inserted, and at the same time, means fortightly holding the cutter in the opening, so that the reaming operationcan be rapidly carried out. The holding means are adjustable so that asthe hole is reamed out the cutter can be drawn farther into the same. Amember is positioned adjacent to the edge of the opening and has aroller bearing which engages a ring adjustably carried upon the spindleof the cutter, as will appear more clearly hereinafter.

Referring more particularly to the draw ings, I provide a tapered cutter10, fashioned from any suitable material and having a longitudinal bore11. Near one end of the cutter, the here has lateral extensions 12,which constitute key-ways or sockets to receive suitably formed keys orlugs 14 of the spindle 15 upon which the cutter is carried. The bore 11is preferably tapered and the spindle has of course, a correspondinglyformed part which fits into the bore. At the end, the spindle has a head16 engaging at the end of the cutter.

The spindle has a threaded portion 17, beyond which is a square or otherend 18, adapted to be held by a wrench or other means for operating thereamer. A cap 19, having a central opening 20 through which the spindleprojects is arranged upon the spindle. The cap has a laterally-disposedrim which engages a fixed support A. The fixed support consists of thebody in which the opening to be reamed out is located. The cap 19 has anannular extension 21,

which is threaded upon the opposite sides and which carries suitablythreaded rings 22 and 23, at the inside and outside thereof. These ringsare curved at the outer edges and project beyond the extension 21, toform a ball race in which is mounted a series of ball or roller bearings24. The rim of the cap forms a recess into which the cutter can movewhen the device is operated.

A ring or washer 25, is loosely arranged upon the portion 17 of thespindle, and has an annular groove 26 adapted to engage the balls orwashers 24. A nut 27, of angular cross section and having a suitablythreaded opening, is mounted upon the threaded por tion 17 and controlsthe ring 25. By means of the nut 27, the cap 19 can be forced againstthe support A, and the cutter drawn firmly into the opening to be reamedout. The pressure of the cap 19 against the support A prevents the capfrom rotating, as its engagement with the ring 25 is a roller bearingone. Consequently, the spindle 15 can be easily rotated to ream out theopening.

The threaded part 17 of the spindle has a lon 'itudinal slot 32 whichreceives a ro'ec tion 33 of the ring 25, and prevents the relativerotation of the parts as the spindle is rotated.

Preferably, the cutter 10 has teeth or cutting edges 10 which extendlongitudinally thereof. It will be understood that the particular formof the cutter constitutes no element of my invention, but may be variedto suit individual preference or special condi tions. Furthermore, thematerial from which my device is fashioned may be of any suitable kindadapted to the purpose.

Having thus described my invention, I claim as new, and desire to secureby Letters Patent:

A reamer comprising a rotatable spindle having a threaded portion, acutter carried by said spindle and constrained to rotate therewith, acap member having a spindlereeeiving opening therethrough and alaterally disposed abutment adapted to engage a fixed support, athreaded member carried upon the threaded portion of said spindle andadapted to engage the cap member, said cap member abutment forming arecess adapted to receive said cutter.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

ALBERT FISCHBACH.

TVitnesses:

WM. DONALD, F. OCoNNoR.

